How Do Thin Film Batteries Work?

As the name suggests, a thin film battery is a layer of thin film made into a solar cell, which uses very little silicon, which is easier to reduce costs. At the same time, it is both a high-efficiency energy product and a new type of building material, which is easier to integrate perfectly with buildings. In the context of the continued tightness of silicon raw materials in the international market, thin-film solar cells have become a new trend and a new hot spot in the development of the international photovoltaic market. There are three main types of thin-film batteries that can be industrially produced on a large scale: silicon-based thin-film solar cells, copper-indium-gallium-selenium thin-film solar cells (CIGS), and cadmium telluride thin-film solar cells (CdTe).

Thin film battery is a technology that uses thin layers of materials, using electronic semiconductors and optical principles. Considering cost-effectiveness, thin-film photovoltaic cells are adopted and used in the second and third generation

The principle of thin-film battery power generation is similar to that of crystalline silicon. When sunlight is irradiated onto the battery, the battery absorbs light energy to generate photo-generated electron-hole pairs. Under the action of the built-in electric field of the battery, the photo-generated electrons and holes are separated and the holes drift. To the P side, the electrons drift to the N side, forming a photo-generated electromotive force,

1. Small power loss under the same shielding area (good power generation in low light)

2. Less power is lost than wafer solar cells under the same illumination

3.has better power temperature coefficient

4. Better

Silicon based thin film solar cells, copper indium gallium selenium thin film solar cells (CIGS), cadmium telluride thin film solar cells (CdTe) ^[1] .